MEDIUM
8th CBSE
IMPORTANT
Earn 100

Explain the causes for the deterioration of the river Ganga.

Important Questions on Pollution: A Global Threat

MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>Extended learning>Q 1

Find the given words in the grid.
PBrush

Pollution Nitrogen oxides
Carbon monoxide Fossil fuels
Petrol Lead
Ozone Sulphur dioxide
MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>HOTS>Q 1
Explain why clear-looking water may not always be suitable for drinking.
MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>HOTS>Q 2
Why should we not throw plastic bottles into the river?
HARD
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>HOTS>Q 3
Oil spill is a major problem in the oceans and seas. Why?
MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>HOTS>Q 4
Why is biogas considered a better fuel?
MEDIUM
8th CBSE
IMPORTANT
Galaxy A Course in Science Book 8>Chapter 18 - Pollution: A Global Threat>AT A GLANCE>Q 1

 Complete the mind map given below.

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